请老师检查
来源：3-13 编程练习
折兰
2022-09-14 23:00:15
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
<li>jquery</li>
<li>HTML5</li>
<li>CSS3</li>
<li>ES6</li>
</ul>
<script type="text/javascript">
var Lis = document.querySelectorAll('li');
for (let i = 0; i < Lis.length; i++) {
Lis[i].onmouseenter = function () {
this.className = 'change';
}
Lis[i].onmouseleave = function () {
this.className = '';
};
}
</script>
</body>
</html>
2回答
-
好帮手慕小李
2022-09-15
同学你好，鼠标移入缺少序号的效果。建议如下：
同学试试，祝学习愉快！
0 -
折兰
提问者
2022-09-14
忘写css样式了
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.change {
color: #ff0000;
font-size: 18px;
}
</style>
</head>
<body>
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
<li>jquery</li>
<li>HTML5</li>
<li>CSS3</li>
<li>ES6</li>
</ul>
<script type="text/javascript">
var Lis = document.querySelectorAll('li');
for (let i = 0; i < Lis.length; i++) {
Lis[i].onmouseenter = function () {
this.className = 'change';
}
Lis[i].onmouseleave = function () {
this.className = '';
};
}
</script>
</body>
</html>
0
